IIT JEE प्रश्न और उत्तर का अभ्यास करें

प्र: What is the main purpose of state legislatures? 1538 0

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    to make and pass laws at the state level
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    to control the legislation of local governments
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    to provide legislative support for Congress
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    to challenge the legality of federal laws
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उत्तर : 1. "to make and pass laws at the state level"
व्याख्या :

Answer: A) to make and pass laws at the state level Explanation: Each state in the U.S. has a state legislature. The state legislatures main purpose is to make and pass laws at the state level.   An integral part to each state government - indeed where the people of each state are best represented - is the state legislature.   State legislatures are the respective representative bodies for the people of each state. The primary responsibility of any state legislature is to design, draft, and vote on bills and laws to govern each state. Bills and laws generally go through several committees prior to being voted on in the entire assembly, through which the bills and laws are changed, amended, or killed altogether.

प्र: Ravi, Anand and Pranay are running a business firm in partnership. What is Anand's share in the profit earned by them? a. Ravi, Anand and Pranay invested the amounts in the ratio of 2 : 4 : 7. b. Pranay's share in the profit is Rs. 8750. 1537 0

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    Only a is sufficient
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    Neither a nor b is sufficient
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    Only b is sufficient
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    Both a and b sufficient
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उत्तर : 4. "Both a and b sufficient"
व्याख्या :

Answer: D) Both a and b sufficient Explanation: Given Pranay's profit in the share is Rs. 8750 But given that their investments are in the ratio 2:4:7 713×P = 8750 P = 16250 Now Anand's share = 413×16250 = Rs.5000 Thus both staements a and b are sufficient to answer this question.

प्र: The law of demand states that other things equal 1537 0

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    as the price increases, the quantity demanded will decrease.
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    as the price increases, the quantity demanded will increase.
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    as the price decreases, the demand curve will shift to the right.
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    as the price increases, the demand will decrease.
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उत्तर : 1. "as the price increases, the quantity demanded will decrease."
व्याख्या :

Answer: A) as the price increases, the quantity demanded will decrease. Explanation:

प्र: Important Time and Distance formulas with examples. 1537 0

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व्याख्या :

1. How to find Speed(s) if distance(d) & time(t) is given:    Speed (S) = Distance (D)Time (T)     Ex: Find speed if a person travels 4 kms in 2 hrs? Speed = D/T = 4/2 = 2 kmph.   2.  Similarly, we can find distance (d)  if speed (s) & time (t) is given by   Distance (D) = Speed (S) x Time (T)   Ex : Find distance if a person with a speed of 2 kmph in 2 hrs? Distance D = S X T = 2 x 2 = 4 kms.    3.  Similarly, we can find time (t) if speed (s) &  distance (d) is given by   Time (T) = Distance (D)Speed (S)   Ex : Find in what time a person travels 4 kms with a speed of 2 kmph? Time T = D/S = 4/2 = 2 hrs.   4. How to convert  km/hr into m/sec :   P km/hr = P x 518 m/sec   Ex : Convert 36 kmph into m/sec? 36 kmph = 36 x 5/18 = 10 m/sec    5. How to convert  m/sec into km/hr :   P m/sec = P x 185 kmph.   Ex : Convert 10 m/sec into km/hr? 10 m/sec = 10 x 18/5 = 36 kmph.   6.  If the ratio of the speeds of A and B is a:b, then the ratio of the times taken by them to cover the same distance is b : a.   7.  Suppose a man covers a certain distance at x km/ hr and an equal distance at y km/hr . Then, the average speed during the whole journey is 2xyx+y km/hr.

प्र: Tissue that connects muscle to bone 1537 0

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    Tendons
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    Joint capsule
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    Body fiber
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    Ligament
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उत्तर : 1. "Tendons"
व्याख्या :

Answer: A) Tendons Explanation: A tendon is a fibrous connective tissue which is Tough, fibrous, cord-like tissue that connects muscle to bone or another structure, such as an eyeball. Tendons help the bone or structure to move.

प्र: Energy is measured in units called 1537 0

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    Newtons
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    Watts
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    Joules
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    Ohm/mtr
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उत्तर : 3. "Joules"
व्याख्या :

Answer: C) Joules Explanation: Energy is measured in units called Joules.   Joule is unit of work or energy in the International System of Units (SI) which is equal to the work done by a force of one newton acting through one metre.   1 Joule  =  107 ergs or 0.7377 foot-pounds.

प्र: How many seconds will a 800 meter long train moving with a speed of 63 km/hr take to cross a man walking with a speed of 3 km/hr in the direction of the train ? 1537 0

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    48
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    52
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    38
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    42
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उत्तर : 1. "48"
व्याख्या :

Answer: A) 48 Explanation: Here distance d = 800 mts speed s = 63 - 3 = 60 kmph = 60 x 5/18 m/s time t = 800x1860x5= 48 sec.

प्र: What element is found in all organic compounds? 1536 0

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    Hydrogen
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    Calcium
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    Nitrogen
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    Carbon
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उत्तर : 4. "Carbon"
व्याख्या :

Answer: D) Carbon Explanation: Carbon is found in all organic compounds.

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